Plane Trigonometry and Numerical Computation
Index
- Abscissa,
- 6.
- Absolute value,
- of a directed quantity, 7.
- Addition,
- of angles, 9;
formulas in trigonometry, 95.
- Angle,
- definition of, 7;
directed, 7;
measurement of, 8;
addition and subtraction of, 9;
functions of, 2;
of elevation and depression, 16;
of triangle, 48;
in artillery service, 76.
- Annuities,
- 70.
- Arc of a circle,
- 76.
- Artillery service,
- use of angles in, 76.
- Axes,
- of coördinates, 5.
-
- Briggian
- logarithms, 54.
-
- Characteristic
- of a logarithm, 54.
- Cologarithms,
- 59.
- Common logarithms,
- 54.
- Compass,
- Mariner’s, 29.
- Computation,
- numerical, 18, 24;
logarithmic, 61 ff.
- Coördinates
- in a plane, 5.
- Cosecant,
- 32.
- Cosine,
- definition of, 12;
variation of, 81;
graph of, 82;
law of --s, 40.
- Cotangent,
- definition of, 32.
- Course,
- 29.
- Coversed sine,
- 32.
-
- Dead reckoning,
- 30.
- Departure,
- 29.
- Difference
- in latitude, 29;
in longitude, 30.
- Directed,
- angles, 7;
quantities, 6;
segments, 7.
- Distance,
- 29.
-
- Elements of a triangle,
- 1.
-
- Function,
- definition of, 3;
representation of, 32;
trigonometric, 12 ff., 58.
-
- Graph
- of trigonometric functions, 80, 82, 83.
-
- Haversine,
- definition of, 32;
solution of triangles by, 48;
tables of, 117—9;
-
- Identities,
- trigonometric, 35.
- Initial position,
- 7.
- Interest,
- 70.
- Interpolation,
- 22.
-
- Knot,
- 29.
-
- Latitude,
- difference in, 29;
middle, 30.
- Law,
- of sines, 40;
cosines, 40;
of tangents, 47.
- Logarithm,
- definition of, 52;
invention of, 50;
laws of, 53;
systems of, 54;
characteristic and mantissa of, 54;
use of tables of, 56;
tables of, 110—16.
- Logarithmic
- scale, 73.
-
- Magnitude,
- 6.
- Mantissa,
- 54.
- Mariner’s
- compass, 29.
- Middle
- latitude, 30.
- Mil,
- 76.
-
- Napier, J.,
- 50.
- Nautical
- mile, 29.
- Navigation,
- 28 ff.
- Negative angle,
- definition of, 7;
functions of, 85.
-
- Ordinate,
- 6.
|